Functions and variables

underscore_to_space <- partial(str_replace_all, pattern = "_", replacement = " ")
oldest_node_tree <- trimmed_species_tree_as_df %>% pull(x) %>% max()

# labels for plot axis
max_msa_index <- kappa_caseins_alignment_positions %>% pull(msa_index) %>% max()
align_breaks <- c(
  1, # min
  max_msa_index, # max
  seq(100, max_msa_index, 100), # intermediate positions
  position_align_chymosin_cleavage_site + 0.5 # cleavage site
)
align_breaks_labels <- c(
  1, # min
  max_msa_index, # max
  seq(100, max_msa_index, 100), # intermediate positions
  "▲" # cleavage site
) %>% as.character()
align_minor_breaks <- c(1, max_msa_index, seq(25, max_msa_index, 25))

save_plot_pdf <- partial(
  ggsave, 
  path = plot_output_dir, 
  device = cairo_pdf, 
  units = "in"
)
save_plot_jpg <- partial(
  ggsave, 
  path = plot_output_dir, 
  dpi = "retina", 
  units = "in"
)
save_plot <- function(plot, name, ...) {
  suppressMessages(
    save_plot_pdf(plot = plot, filename = glue("{name}.pdf"), ...)
    )
  suppressMessages(
    save_plot_jpg(plot = plot, filename = glue("{name}.jpg"), ...)
    )
}
save_table <- function(table, name, ...) {
  write(x = table, file = file.path(table_output_dir, glue("{name}.tex")), ...)
}

aa_custom_OkabeIto_colours <- c(
  "cysteine" = "#E69F00", # orange
  "histidine" = "#56B4E9", # light blue
  "charged +" = "#0072B2", # marine blue
  "charged -" = "#D55E00", # red
  "aromatic" = "#CC79A7", # pink
  "proline" = "#F0E442", # yellow
  "polar" = "#009E73", # green
  "apolar" = "#999999", # light grey
  "glycine" = "#999999", # light grey
  "gap" = "#ffffff" # white
)

colour_parts_kappa_casein <- c(
  "PKC" = "#e69f00", # orange
  "GMP" = "#56b4e9" # blue
)

Figure 1

# custom geom to be used for annotation with consistent style
geom_cladelabel_custom <- partial(
  geom_cladelabel,
  fontsize = 2.4,
  offset = 0.5,
  offset.text = 0.1,
  family = "arial",
  barsize = 0.4
)

# geological time periods
# package geoscale
# Gradstein, F. M., Ogg, J. M., and Schmitz, M., 2012, A geologic time scale, Boston, USA, Elsevier.
data(timescales)

mammals_periods <- timescales %>%
  purrr::pluck("ICS2015") %>% 
  filter(End < oldest_node_tree, !is.na(Part_of)) %>%
  rename(geologic.period = Part_of) %>%
  group_by(geologic.period) %>%
  summarise(start = max(Start), end = min(End)) %>%
  ungroup() %>%
  mutate(geologic.period = fct_reorder(geologic.period, end)) %>%
  arrange(desc(geologic.period)) %>%
  identity()

mammals_periods_breaks <- c(mammals_periods$start) %>% round(1)

# Panel A - maximum likelihood protein tree
plot_fitted_tree <- fitted_tree %>%
  ggtree(size = 0.1, color = "black") +
  xlim_tree(3.2) +
  geom_treescale(
    x = 0.1,
    y = 30,
    offset = 2,
    fontsize = 2.5,
    linesize = 0.4,
    width = 0.1
  ) +
  geom_tiplab(
    size = 0.7,
    mapping = aes(label = underscore_to_space(label)),
    family = "arial",
    fontface = "italic"
  ) +
  scale_x_continuous(expand = c(0.02, 0)) +
  scale_y_continuous(expand = c(0.02, 0)) +
  geom_cladelabel_custom(node = 101, label = "Monotremes") +
  geom_cladelabel_custom(node = 196, label = "Marsupials") +
  geom_cladelabel_custom(node = 194, label = "Afrotheria") +
  geom_cladelabel_custom(node = 106, label = "Glires") +
  geom_cladelabel_custom(node = 186, label = "Bats") +
  geom_cladelabel_custom(node = 139, label = "New world monkeys") +
  geom_cladelabel_custom(node = 126, label = "Old world monkeys") +
  geom_cladelabel_custom(node = 134, label = "Apes") +
  geom_cladelabel_custom(node = 175, label = "Carnivorans") +
  geom_cladelabel_custom(node = 149, label = "Ruminantia") +
  geom_cladelabel_custom(node = 164, label = "Cetaceans") +
  geom_cladelabel_custom(node = 169, label = "Camelids") +
  geom_cladelabel_custom(node = 172, label = "Odd-toed ungulates") +
  labs(
    tag = "A"
  ) +
  NULL



# Panel B- scatter plot
plot_compare_evodist_divtime <- compare_evodist_divtime %>%
  filter(corrected == TRUE) %>%
  ggplot(
    mapping = aes(
      x = divergence.time,
      y = distance.fit,
      label = glue("{species.1}-{species.2}") # dev only
    )
  ) +
  geom_vline( # separates geological periods
    xintercept = mammals_periods_breaks,
    colour = "darkgrey",
    linetype = "dotted", size = 0.5
  ) +
  geom_point( # couples of species
    size = 0.7,
    alpha = 0.1,
    colour = "black"
  ) +
  geom_text( # annotate geological periods at the top
    data = mammals_periods %>% filter(geologic.period != "Quaternary"),
    mapping = aes(label = geologic.period, x = start + (end - start) / 2),
    y = Inf,
    family = "arial",
    vjust = 1.4,
    size = 2.5
  ) +
  scale_x_continuous(
    limits = c(0, max(mammals_periods_breaks)),
    minor_breaks = seq(0, 200, 10),
    sec.axis = sec_axis(~., breaks = mammals_periods_breaks),
    expand = c(0.01, 0)
  ) +
  labs(
    x = "Divergence Time (Mya)",
    y = "Pairwise distance",
    tag = "B"
  ) +
  theme_bw() +
  theme(
    legend.position = "none",
    axis.text = element_text(size = 7),
    axis.title = element_text(size = 9),
    axis.ticks.x = element_line(size = 0.2),
    panel.border = element_rect(fill = NA, colour = "black", size = 0.4)
  ) +
  NULL



(plot_compare_evodist_divtime_combined <- plot_fitted_tree +
  plot_compare_evodist_divtime +
  plot_layout(widths = c(2.8, 5.2)) &
  theme(
    plot.tag.position = c(0, 1),
    text = element_text(family = "arial", face = "plain")
  )
)

save_plot(
  plot = plot_compare_evodist_divtime_combined,
  name = "figure_1"
)

Figure 2

# equal expand values for the y axis to assure the 2 plots align well
indels_kappacasein_parts_plot_expand <- c(0.005, 0.0)


# species tree on the left
plot_kappa_casein_tree <- ggplot(trimmed_species_tree, size = 0.5) +
  geom_tree(size = 0.2) +
  geom_treescale(x = 100, y = 90, fontsize = 3, linesize = 0.2) +
  theme_bw() +
  theme(
    plot.margin = margin(0, 0, 0, 0),
    panel.spacing = margin(0, 5, 5, 5),
    panel.border = element_blank(),
    panel.grid.major = element_blank(),
    panel.grid.minor = element_blank(),
    axis.text = element_blank(),
    axis.title = element_blank(),
    axis.ticks = element_blank(),
  ) +
  scale_y_continuous(expand = indels_kappacasein_parts_plot_expand) +
  scale_x_continuous(expand = c(0, 0)) +
  xlim_tree(167)


# length of PKC and GMP + protein tandem repeats
bidirectional_breaks <- c(
  range(parts_positions_neg$position), # min/max lengths
  seq(0, 200, by = 75),
  seq(0, -200, by = -75)
) %>% sort()


plot_indels_kappacasein_parts <- ggplot( # first the length bar plot
  data = parts_positions_neg,
  mapping = aes(x = position, y = species, fill = part)
) +
  geom_barh(stat = "identity") +
  geom_rect( # then the PTRs annotations
    data = df_plot_indels,
    mapping = aes(
      ymin = as.numeric(species) - 0.4,
      ymax = as.numeric(species) + 0.4,
      xmin = N_flank_position,
      xmax = C_flank_position + 1,
      colour = type
    ),
    inherit.aes = FALSE,
    alpha = 0.0,
    size = 0.25
  ) + # add duplications
  geom_vline(xintercept = 0, size = 0.1, colour = "black") +
  scale_fill_manual(values = c(colour_parts_kappa_casein)) +
  scale_colour_manual(values = c("tandem repeat" = "black")) +
  scale_y_discrete(
    expand = indels_kappacasein_parts_plot_expand,
    position = "right",
    labels = underscore_to_space
  ) +
  scale_x_continuous(
    expand = c(0, 0),
    breaks = bidirectional_breaks,
    minor_breaks = seq(-200, 200, 25),
    labels = abs(bidirectional_breaks),
    sec.axis = sec_axis(~.,
      breaks = c(0),
      labels = c("PKC /GMP cleavage site")
    )
  ) +
  theme_bw() +
  theme(
    legend.position = c(1, 1),
    legend.justification = c(1, 1),
    axis.title.y = element_blank(),
    axis.line.y = element_blank(),
    axis.text.y = element_text(size = 7, face = "italic"),
    axis.ticks = element_line(size = 0.2),
    legend.title = element_blank(),
    legend.text = element_text(margin = margin(0, 0, 0, 2), size = 9),
    plot.margin = margin(0, 0, 0, 0),
    panel.spacing = margin(0, 5, 5, 0),
    legend.background = element_rect(fill = "transparent"),
    legend.box.background = element_rect(
      colour = "black",
      fill = "white",
      size = 0.1
    ),
    legend.spacing = unit(1, "mm"),
    legend.key = element_blank(),
    panel.background = element_rect(fill = "white", colour = "white"),
    plot.background = element_rect(fill = "white", colour = "white"),
    legend.box.spacing = unit(0.01, "line"),
    legend.key.size = unit(5, "pt"),
    panel.border = element_rect(
      fill = "transparent",
      colour = "black",
      size = 0.2
    )
  ) +
  labs(
    x = "distance from the PKC/GMP cleavage site"
  )


(plot_combined_tree_lengths <- plot_kappa_casein_tree +
  plot_indels_kappacasein_parts +
  plot_layout(widths = c(0.5, 2), ncol = 2)
)

save_plot(
  plot = plot_combined_tree_lengths,
  name = "figure_2"
)

Figure 3

(plot_aa_comp_range <- kappa_caseins_aa_comp_df_plot %>%
  ggplot(mapping = aes(
    x = freq_min,
    y = part,
    xend = freq_max,
    yend = part,
    colour = group
  )) +
  geom_segment(show.legend = FALSE, size = 5) +
  facet_wrap(~residues_f, ncol = 5, nrow = 4) +
  scale_colour_manual("amino acids", values = aa_custom_OkabeIto_colours) +
  theme_bw() +
  scale_x_continuous(limits = c(0, NA), expand = c(0, 0)) +
  labs(
    x = "amino acid frequency"
  ) +
  theme(
    text = element_text(colour = "black", family = "Arial"),
    axis.text = element_text(colour = "black", family = "Arial"),
    axis.ticks = element_line(size = 0.1),
    axis.text.x = element_text(),
    axis.title.y = element_blank(),
    panel.grid = element_blank(),
    panel.grid.major = element_line(linetype = "dotted"),
    panel.grid.major.x = element_line(size = 0.1, colour = "black"),
    panel.grid.minor.x = element_line(size = 0.05, colour = "darkgrey"),
    panel.border = element_rect(size = 0.2, colour = "black"),
    strip.background = element_rect(fill = "white", size = 0.0, colour = NA),
    strip.text = element_text(hjust = 0, size = 10),
    panel.spacing.x = unit(1, "lines")
  ) +
  NULL
)

save_plot(
  plot = plot_aa_comp_range,
  name = "figure_3"
)

Figure 4

# scales and theme ----
scale_x_align_residue_plot <- scale_x_continuous(
  expand = c(0, 0),
  breaks = align_breaks,
  labels = align_breaks_labels,
  minor_breaks = align_minor_breaks
)

scale_y_align_residue_plot <- scale_y_continuous(
  expand = c(0, 0),
  breaks = c(0, 0.5, 1)
)

theme_align_residue_plot <- theme_bw() +
  theme(
    legend.position = "top",
    legend.title = element_blank()
  )

# names and labels ----
label_other_residues <- "other residues"
label_glutamine <- "glutamine"
label_asparagine <- "asparagine"
label_tyrosine <- "tyrosine"
label_other_aromatic <- "other aromatic (F or W)"
label_charged_minus <- "negatively charged (D or E)"
label_charged_plus <- "positively charged (R, K or H)"
label_pSer <- "pSer"
label_Ser <- "Ser"
label_Ch <- "goat" # Capra hircus
label_BtCh <- "cow & goat" # Bos taurus and Capra hircus

# other residues diplayed in grey ----
colour_other_residues <- c()
colour_other_residues[label_other_residues] <- "#e7e7e7"

# colours for each plot ----
colours_asngln <- colour_other_residues
colours_asngln[label_glutamine] <- "#461b32"
colours_asngln[label_asparagine] <- "#009E73"

colours_aromatics <- colour_other_residues
colours_aromatics[label_other_aromatic] <- "#CC79A7"
colours_aromatics[label_tyrosine] <- "#461b32"

colours_charged <- colour_other_residues
colours_charged[label_charged_minus] <- "#e41a1c"
colours_charged[label_charged_plus] <- "#377eb8"


colours_phosphorylations <- colour_other_residues
colours_phosphorylations[label_pSer] <- "#247a62"
colours_phosphorylations[label_Ser] <- "#8da0cb"
colours_known_pSer <- c()
colours_known_pSer[label_BtCh] <- "#a65628"
colours_known_pSer[label_Ch] <- "#4daf4a"

# vertical line at PKC/GMP cleavage site
vline_cleavage <- geom_vline(
  xintercept = position_align_chymosin_cleavage_site + 0.5,
  colour = "black",
  size = 0.2
)


# weight residues according to species tree ----
fct_weight_conservation <- . %>%
  select(-seq_index, -residue) %>%
  left_join(kappa_caseins_phylo_tree_weights, by = "species") %>%
  group_by(msa_index, class) %>%
  summarise(
    n_w = sum(weight_norm)
  ) %>%
  ungroup()

# hydrophobicity legend ----
kd_range_max <- max(KyteDoolittle_scale_df$hydrophobicity)
kd_range_min <- min(KyteDoolittle_scale_df$hydrophobicity)
hydrophobicity_breaks <- c(kd_range_min, 2, 0, -2, kd_range_max)

# known phosphorylated serines ----
# from Uniprot
# goat: https://www.uniprot.org/uniprot/P02670#ptm_processing
# cow: https://www.uniprot.org/uniprot/P02668#ptm_processing
known_pSer_site_df <- tribble(
  ~msa_index, ~label,
  355, label_Ch,
  294, label_BtCh,
  179, label_BtCh
)

# Panel A - glutamine and asparagine ----

# dataset
df_plot_asngln <- kappa_caseins_alignment_positions %>%
  filter(residue != "-") %>%
  mutate(
    class = case_when(
      residue == "Q" ~ label_glutamine,
      residue == "N" ~ label_asparagine,
      TRUE ~ label_other_residues
    ) %>%
      fct_relevel(label_other_residues, label_asparagine, label_glutamine) # order colours for plot
  ) %>%
  fct_weight_conservation()

# plot
plot_alignment_asngln <- df_plot_asngln %>%
  ggplot(mapping = aes(y = n_w, x = msa_index, fill = class)) +
  geom_bar(stat = "identity", colour = NA) +
  scale_fill_manual(
    values = colours_asngln,
    guide = guide_legend(reverse = TRUE)
  ) +
  theme_align_residue_plot +
  NULL



# Panel B - tyrosines and aromatics ----

# dataset
df_plot_aromatics <- kappa_caseins_alignment_positions %>%
  filter(residue != "-") %>%
  mutate(
    class = case_when(
      residue == "Y" ~ label_tyrosine,
      residue %in% c("F", "W") ~ label_other_aromatic,
      TRUE ~ label_other_residues
    ) %>%
      fct_relevel(label_other_residues, label_other_aromatic, label_tyrosine) # order colours for plot
  ) %>%
  fct_weight_conservation()


# plot
plot_alignment_aromatics <- df_plot_aromatics %>%
  ggplot(mapping = aes(y = n_w, x = msa_index, fill = class)) +
  geom_bar(stat = "identity", colour = NA) +
  scale_fill_manual(
    values = colours_aromatics,
    guide = guide_legend(reverse = TRUE)
  ) +
  theme_align_residue_plot +
  NULL



# Panel C - charged residues ----

# dataset
df_plot_charged <- kappa_caseins_alignment_positions %>%
  filter(residue != "-") %>%
  mutate(
    class = case_when(
      residue %in% c("R", "K", "H") ~ label_charged_plus,
      residue %in% c("E", "D") ~ label_charged_minus,
      TRUE ~ label_other_residues
    ) %>%
      fct_relevel(label_other_residues, label_charged_plus, label_charged_minus) # order colours for plot
  ) %>%
  fct_weight_conservation()

# plot
plot_alignment_charged <- df_plot_charged %>%
  ggplot(mapping = aes(y = n_w, x = msa_index, fill = class)) +
  geom_bar(stat = "identity", colour = NA) +
  scale_fill_manual(
    values = colours_charged,
    guide = guide_legend(reverse = TRUE)
  ) +
  theme_align_residue_plot +
  NULL


# Panel D - predicted disorder ----

# dataset
df_plot_disorder <- kappa_casein_disorder_align %>%
  filter(!is.na(seq_index)) %>%
  mutate(
    class = cut(iupred_short, breaks = seq(0, 1, 0.2))
  ) %>%
  fct_weight_conservation()


# plot
plot_alignment_disorder <- df_plot_disorder %>%
  ggplot(mapping = aes(y = n_w, x = msa_index, fill = class)) +
  geom_bar(stat = "identity", colour = NA) +
  scale_fill_brewer(palette = "Greens") +
  theme_bw() +
  theme(
    legend.position = "top",
    legend.title = element_text(size = 8)
  ) +
  labs(fill = "predicted disorder") +
  NULL


# Panel E - hydrophobicity ----

# dataset
df_plot_hydrophobicity <- kappa_caseins_hydrophobicity %>%
  filter(residue != "-") %>%
  rename(class = hydrophobicity) %>%
  fct_weight_conservation()

# plot
plot_alignment_hydrophobicity <- df_plot_hydrophobicity %>%
  ggplot(mapping = aes(y = n_w, x = msa_index, fill = class)) +
  geom_bar(stat = "identity", colour = NA) +
  scale_fill_distiller(
    palette = "BrBG",
    limits = c(kd_range_min, kd_range_max),
    direction = 1,
    breaks = hydrophobicity_breaks,
    guide = guide_colourbar(ticks.colour = "black", barwidth = 12)
  ) +
  theme_bw() +
  theme(
    legend.position = "top",
    legend.title = element_text(size = 8)
  ) +
  labs(fill = "hydrophobicity") +
  NULL


# Panel F - phosphorylations ----

# dataset
df_plot_phosphorylations <- kappa_casein_fam20c_matches_tidy %>%
  mutate(match = TRUE) %>%
  rename(seq_index = match_position) %>%
  full_join(kappa_caseins_alignment_positions, by = c("species", "seq_index")) %>%
  mutate(match = !is.na(match)) %>%
  filter(residue != "-") %>%
  mutate(
    class = case_when(
      match == TRUE ~ label_pSer,
      residue == "S" ~ label_Ser,
      TRUE ~ label_other_residues
    ) %>%
      fct_relevel(label_other_residues, label_Ser, label_pSer) # order colours for plot
  ) %>%
  fct_weight_conservation()

# plot
plot_alignment_phosphorylations <- df_plot_phosphorylations %>%
  ggplot(mapping = aes(y = n_w, x = msa_index, fill = class)) +
  geom_bar(stat = "identity", colour = NA) +
  geom_text(data = known_pSer_site_df, mapping = aes(x = msa_index, colour = label), y = 1, vjust = 0.5, label = "▾", inherit.aes = FALSE, size = 4) +

  scale_fill_manual(
    values = colours_phosphorylations,
    guide = guide_legend(reverse = TRUE)
  ) +
  theme_align_residue_plot +
  NULL


# combine all plots ----

(plot_alignment_combined <- {
  (plot_alignment_asngln + labs(tag = "A")) /
    (plot_alignment_aromatics + labs(tag = "B")) /
    (plot_alignment_charged + labs(tag = "C")) /
    (plot_alignment_disorder + labs(tag = "D")) /
    (plot_alignment_hydrophobicity + labs(tag = "E")) /
    (plot_alignment_phosphorylations + labs(tag = "F"))
} + plot_layout(ncol = 1) &
  vline_cleavage & # following scales, themes and labs applied to all subplots
  scale_x_align_residue_plot &
  scale_y_align_residue_plot &
  theme(
    text = element_text(family = "Arial", colour = "black"),
    legend.text = element_text(size = 7),
    legend.box.spacing = unit(0.01, "line"),
    axis.text = element_text(size = 7, colour = "black"),
    axis.title = element_text(size = 7),
    panel.border = element_rect(size = 0.2),
    axis.ticks = element_line(size = 0.2),
    legend.key.size = unit(5, "pt"),
    plot.tag.position = c(0, 1),
    plot.tag = element_text(colour = "black", size = 11),
    legend.justification = c(0, 0),
  ) &
  labs(
    x = "amino acid position in alignment",
    y = "weighted frequency"
  )
)

save_plot(
  plot = plot_alignment_combined,
  name = "figure_4"
)

Figure 5

pH_breaks <- c(3, 4, 5, 6, 7)
pH_minor_breaks <- seq(1.5, 7.5, 0.5)
ncpr_highlighted_species <- c(
  "Saimiri_boliviensis",
  "Cavia_porcellus",
  "Homo_sapiens",
  "Mus_musculus",
  "Bos_taurus"
)
geom_line_highlight_species <- partial(geom_line, mapping = aes(colour = species), size = 0.3)

# panel A
plot_ncpr_change_mature <- kappa_caseins_ncpr %>%
  filter(part == "mature") %>%
  ggplot(mapping = aes(x = pH, y = net_charge_per_residue, group = species)) +
  geom_hline(yintercept = 0, size = 0.1, linetype = "dotted") +
  geom_line(size = 0.1, colour = "lightgray") +
  facet_wrap(~part) +
  scale_y_continuous(
    limits = c(-0.21, 0.21),
    sec.axis = sec_axis(~.)
  ) +
  scale_x_continuous(
    breaks = pH_breaks,
    minor_breaks = pH_minor_breaks,
    expand = c(0, 0)
  ) +
  scale_color_brewer(
    palette = "Set1",
    labels = underscore_to_space,
    guide = guide_legend(
      nrow = 2,
      title.hjust = 0,
      label.hjust = 0,
      title.vjust = 1,
      label.vjust = 0.5,
      byrow = TRUE,
      direction = "horizontal"
    )
  ) +
  labs(
    y = "net charge per residue",
    x = "pH"
  ) +
  theme_bw() +
  theme(
    legend.title = element_blank(),
    legend.text.align = 0,
    legend.text = element_text(face = "italic", size = 8),
    legend.key.size = unit(10, "pt"),
    legend.position = "bottom",
    legend.box.spacing = unit(0.03, "line"),
    legend.justification = c(1, 0),
    panel.background = element_rect(size = 0.2, colour = "black"),
    panel.grid.major = element_line(size = 0.2),
    plot.tag.position = c(0, 1),
    strip.background = element_blank(),
    panel.spacing = unit(1.2, "line"),
    axis.text = element_text(size = 9, colour = "black"),
    axis.title = element_text(size = 10, colour = "black"),
    axis.ticks = element_line(size = 0.2, colour = "black")
  ) +
  NULL

# panel B
# same plot, different data
plot_ncpr_change_parts <- plot_ncpr_change_mature %+%
  (kappa_caseins_ncpr %>% filter(part != "mature")) &
  theme(legend.position = "none")

# combination of the 2 plots
# highlight species of interests
(plot_charge_combined <- (
  plot_ncpr_change_mature +
    geom_line_highlight_species(
      data = subset(
        kappa_caseins_ncpr,
        part == "mature" &
          species %in% ncpr_highlighted_species
      )
    ) +
    labs(tag = "A")
) +
  (
    plot_ncpr_change_parts +
      geom_line_highlight_species(
        data = subset(
          kappa_caseins_ncpr,
          part != "mature" &
            species %in% ncpr_highlighted_species
        )
      ) +
      labs(tag = "B")
  ) +
  plot_layout(widths = c(1, 2))
)

save_plot(
  plot = plot_charge_combined,
  name = "figure_5"
)

Figure 6

# merge predicted count phosphorylations/o-glycosylations
df_phospho_glyco_counts <- bind_rows(
  phosphorylation = kappa_casein_fam20c_counts,
  Oglycosylation = kappa_casein_oglyc_glycomine_counts,
  .id = "PTM"
) %>%
  order_species_tree() %>%
  order_cleavage_parts() %>%
  mutate(n = if_else(part == "PKC", -n, n)) # uses negative values for PKC

# plot phosphorylations
plot_phospho_counts <- df_phospho_glyco_counts %>%
  filter(PTM == "phosphorylation") %>%
  ggplot(mapping = aes(x = n, y = species, fill = part)) +
  geom_barh(stat = "identity") +
  scale_fill_manual(values = c(colour_parts_kappa_casein)) +
  scale_y_discrete(expand = c(0.005, 0.0), position = NULL) +
  scale_x_continuous(
    expand = c(0.005, 0),
    limits = c(-8, 8),
    breaks = seq(-8, 8, 2),
    minor_breaks = seq(-8, 8, 1),
    labels = c(seq(8, 2, -2), 0, seq(2, 8, 2)),
    sec.axis = dup_axis()
  ) +
  theme_bw() +
  theme(
    axis.title = element_blank(),
    axis.ticks.y = element_blank(),
    axis.text.y = element_blank(),
    legend.position = c(0, 1),
    legend.justification = c(0, 1),
    legend.title = element_blank(),
    legend.background = element_rect(size = 0.1, colour = "black"),
    legend.key.size = unit(5, "pt"),
    legend.text = element_text(size = 8)
  ) +
  labs(
    title = "phosphorylations predictions"
  ) +
  NULL

# plot glycosylations
plot_glyco_counts <- df_phospho_glyco_counts %>%
  filter(PTM == "Oglycosylation") %>%
  ggplot(mapping = aes(x = n, y = species, fill = part)) +
  geom_barh(stat = "identity") +
  scale_fill_manual(values = c(colour_parts_kappa_casein)) +
  scale_y_discrete(
    expand = c(0.005, 0.0),
    position = "right",
    labels = underscore_to_space
  ) +
  scale_x_continuous(
    expand = c(0.005, 0),
    limits = c(-20, 20),
    breaks = seq(-20, 20, 5),
    minor_breaks = seq(-20, 20, 1),
    labels = c(seq(20, 5, -5), 0, seq(5, 20, 5)),
    sec.axis = dup_axis()
  ) +
  theme_bw() +
  theme(
    axis.title = element_blank(),
    legend.position = "none",
    axis.text.y = element_text(face = "italic", size = 6),
  ) +
  labs(
    title = "O-glycosylation predictions"
  ) +
  NULL

plot_phospho_glyco_counts <- {
  plot_kappa_casein_tree + {
    {
      plot_phospho_counts + plot_glyco_counts
    } &
      theme(
        plot.margin = margin(0, 3, 0, 3),
        panel.border = element_rect(size = 0.1),
        axis.title.y = element_blank(),
        axis.text.x = element_text(size = 6),
        axis.ticks = element_line(size = 0.1, lineend = "butt"),
        plot.title = element_text(size = 8),
        plot.subtitle = element_blank()
      ) &
      geom_vline(xintercept = 0, size = 0.05, colour = "black")
  }
} +
  plot_layout(widths = c(0.7, 4)) +
  theme(
    plot.margin = margin(0, 0, 0, 0)
  )

save_plot(
  plot = plot_phospho_glyco_counts,
  name = "figure_6"
)

Figure 7

all_cysteines_positions_rel_cattle <- kappa_caseins_cysteines_positions_rel_cattle %>%
  pull(cattle_position) %>%
  unique()
SS_bonds_categories <- kappa_caseins_SS_bonds_classes %>%
  pull(bond) %>%
  levels()

# kappa-casein residues for every position with a cysteine in a species
plot_kappa_casein_cysteines <- kappa_caseins_cysteines_positions_rel_cattle %>%
  mutate(position_id = group_indices(., cattle_position)) %>% # to simulate continuous axis
  ggplot(mapping = aes(
    x = position_id,
    y = species,
    label = residue,
    fill = group
  )) +
  geom_tile() +
  geom_vline(xintercept = seq(1.5, 11.5, 1), colour = "black", size = 0.1) +
  geom_text(family = "Source Code Pro", size = 2) +
  scale_fill_manual(values = aa_custom_OkabeIto_colours) +
  theme_bw() +
  theme(legend.position = "bottom") +
  scale_x_continuous(
    breaks = 1:12,
    labels = all_cysteines_positions_rel_cattle,
    expand = c(0, 0),
    sec.axis = dup_axis()
  ) +
  scale_y_discrete(
    expand = c(0, 0)
  ) +
  guides(fill = guide_legend(nrow = 9, ncol = 1)) +
  theme(
    axis.ticks.y = element_blank(),
    axis.text.y = element_blank(),
    legend.direction = "vertical",
    legend.position = c(0.7, 0),
    legend.key.size = unit(2, "pt"),
    legend.title = element_text(size = 5),
    legend.text = element_text(size = 5),
    legend.box.margin = margin(2, 2, 2, 2, unit = "pt"),
    legend.margin = margin(2, 2, 2, 2, unit = "pt"),
    legend.background = element_rect(fill = "transparent"),
    legend.box.background = element_rect(
      colour = "black",
      fill = "white",
      size = 0.1
    ),
    legend.spacing = unit(0.5, "mm"),
    legend.justification = c(.5, 0)
  ) +
  labs(
    x = "position",
    fill = "amino acids"
  ) +
  NULL



# possibilities to form dimer/oligo/intrachain SS bonds
plot_SS_bonds <- kappa_caseins_SS_bonds_classes %>%
  filter(possibility) %>%
  arrange(bond) %>%
  mutate(bond_id = group_indices(., bond)) %>% # to simulate continuous axis
  ggplot(mapping = aes(x = bond_id, y = species)) +
  geom_text(label = "\u2713", size = 4) + # draw a tick
  geom_vline(xintercept = c(1.5, 2.5), size = 0.1, colour = "black") +
  scale_y_discrete(
    position = "right",
    labels = underscore_to_space,
    drop = FALSE
  ) +
  scale_x_continuous(
    breaks = 1:3,
    labels = SS_bonds_categories,
    sec.axis = dup_axis(),
    expand = c(0.25, 0)
  ) +
  theme_bw() +
  theme(
    legend.position = "none",
    axis.text.y = element_text(size = 5, face = "italic"),
    axis.title.x = element_blank(),
    axis.title.y = element_blank(),
    panel.border = element_rect(size = 0.1, colour = "black"),
    panel.grid.major.x = element_blank()
  ) +
  NULL

(plot_combined_cysteines <- {
  plot_kappa_casein_tree + {
    {
      plot_kappa_casein_cysteines + plot_SS_bonds
    } +
      plot_layout(widths = c(3.5, 1)) &
      theme(
        axis.title = element_blank(),
        axis.text.x = element_text(size = 5),
        axis.ticks = element_line(size = 0.2),
        panel.border = element_rect(size = 0.1, colour = "black"),
        panel.grid.major.x = element_blank(),
        plot.margin = margin(0, 0.5, 0, 0),
      )
  }
} +
  plot_layout(widths = c(0.5, 3.5)) +
  NULL
)

save_plot(
  plot = plot_combined_cysteines,
  name = "figure_7"
)

Figure 8

# base plots for this figure and some supplementary figures
plot_kappa_caseins_parts <- kappa_casein_parts_lengths %>%
  mutate(part = fct_relevel(part, "GMP")) %>%
  ggplot(mapping = aes(x = length + 0.5, y = species, fill = part)) +
  geom_barh(stat = "identity") +
  scale_x_continuous(
    expand = c(0, 0),
    breaks = c(1, seq(50, 300, 50)),
    minor_breaks = seq(0, 300, 25)
  ) +
  scale_y_discrete(
    position = "right",
    labels = underscore_to_space,
    expand = c(0, 0)
  ) +
  scale_fill_manual(values = c(colour_parts_kappa_casein)) +
  theme_bw() +
  theme(
    legend.title = element_blank(),
    legend.position = c(1, 1),
    legend.justification = c(1, 1),
    legend.background = element_rect(fill = "transparent"),
    legend.box.background = element_rect(colour = "black", fill = "white", size = 0.2),
    legend.spacing = unit(1, "mm"),
    legend.key = element_blank(),
    legend.box.spacing = unit(0.01, "line"),
    legend.key.size = unit(5, "pt"),
    legend.text = element_text(margin = margin(0, 0, 0, 2), size = 8),
    axis.ticks = element_line(size = 0.2),
    axis.text.y = element_text(size = 7, face = "italic"),
    text = element_text(family = "Arial"),
    axis.title.x = element_text(size = 8),
    axis.text.x = element_text(size = 7),
    panel.background = element_rect(fill = "white", colour = "white"),
    plot.background = element_rect(fill = "white", colour = "white"),
    panel.border = element_rect(fill = "transparent", colour = "black", size = 0.2),
    axis.title.y = element_blank(),
    plot.title = element_text(size = 9),
    plot.subtitle = element_blank(),
    panel.grid.major.x = element_line(size = 0.2),
    panel.grid.minor.x = element_blank()
  ) +
  labs(x = "amino acid position") +
  NULL


# data sets
pepsin_positions <- kappa_caseins_cleavage_positions %>%
  filter(peptidase == "pepsin")
plasmin_positions <- kappa_caseins_cleavage_positions %>%
  filter(peptidase == "plasmin")

plot_kappa_casein_pepsin <- plot_kappa_caseins_parts +
  geom_segment(
    size = 0.1,
    data = pepsin_positions,
    mapping = aes(
      x = cleavage_position + 0.5,
      xend = cleavage_position + 0.5,
      y = as.integer(species) - 0.5,
      yend = as.integer(species) + 0.5
    ),
    inherit.aes = FALSE
  ) +
  theme(
    legend.position = "none",
    axis.text.y = element_blank(),
    axis.ticks.y = element_blank()
  ) +
  labs(title = "Pepsin")

plot_kappa_casein_plasmin <- plot_kappa_caseins_parts +
  geom_segment(
    size = 0.1,
    data = plasmin_positions,
    mapping = aes(
      x = cleavage_position + 0.5,
      xend = cleavage_position + 0.5,
      y = as.integer(species) - 0.5,
      yend = as.integer(species) + 0.5
    ),
    inherit.aes = FALSE
  ) +
  labs(title = "Plasmin")

(cleavage_sites_position_plot <- {
  plot_kappa_casein_tree +
    plot_kappa_casein_pepsin +
    plot_kappa_casein_plasmin
} +
  plot_layout(width = c(1, 4, 4)) &
  theme(plot.margin = margin(0, 0, 0, 0))
)

save_plot(
  plot = cleavage_sites_position_plot,
  name = "figure_8"
)

Figure S1

# positions clades
clades_to_annotate <- tribble(
  ~node, ~clade,
  101, "monotremes",
  197, "marsupials",
  103, "placentals"
) %>%
  left_join(trimmed_species_tree_as_df, by = "node") %>%
  select(clade, branch, y)

plot_kappa_casein_tree_clades <- plot_kappa_casein_tree +
  geom_text(
    data = clades_to_annotate,
    mapping = aes(x = branch, y = y, label = clade),
    vjust = -0.3,
    size = 2.8,
    hjust = 0.5
  )

plot_msa <- kappa_caseins_alignment_positions %>%
  filter(residue != "-") %>%
  left_join(amino.acid.classifications %>%
    filter(classification == "custom: charge and aromatic"),
  by = c("residue" = "residue")
  ) %>%
  ggplot(mapping = aes(x = msa_index, y = species, fill = class)) +
  geom_tile() +
  scale_fill_manual(values = aa_custom_OkabeIto_colours) +
  scale_x_continuous(
    expand = c(0, 0),
    breaks = align_breaks,
    labels = align_breaks_labels,
    minor_breaks = align_minor_breaks
  ) +
  scale_y_discrete(
    position = "right",
    expand = c(0.005, 0.0),
    labels = underscore_to_space
  ) +
  labs(
    x = "amino acid position in alignment"
  ) +
  theme_bw() +
  theme(
    legend.position = "none",
    axis.title.y.right = element_blank(),
    plot.margin = margin(0, 0, 0, 0),
    panel.spacing = margin(0, 0, 0, 0),
    axis.text.y = element_text(face = "italic", size = 7)
  ) +
  NULL


(plot_tree_msa <- plot_kappa_casein_tree_clades +
  plot_msa +
  plot_layout(ncol = 2, nrow = 1, widths = c(0.2, 0.7)) +
  NULL
)

save_plot(
  plot = plot_tree_msa,
  name = "figure_S1"
)

Figure S2

# same plot, different data
(plot_compare_evodist_divtime_nocorrect <- plot_compare_evodist_divtime %+%
  (compare_evodist_divtime %>%
    filter(corrected == FALSE)) &
  theme(plot.tag = element_blank()))

save_plot(
  plot = plot_compare_evodist_divtime_nocorrect,
  name = "figure_S2"
)

Figure S3

species_old_indels <- c(
  "Homo_sapiens" = "human",
  "Bos_taurus" = "cow",
  "Tachyglossus_aculeatus" = "echidna",
  "Ornithorhynchus_anatinus" = "platypus",
  "Monodelphis_domestica" = "opossum",
  "Trichosurus_vulpecula" = "possum"
)


# tree
tips_to_drop_old_indels <- trimmed_species_tree_as_df %>%
  filter(isTip, !label %in% names(species_old_indels)) %>%
  pull(node)

tree_old_indels <- trimmed_species_tree %>%
  drop.tip(tips_to_drop_old_indels)

tree_old_indels_df <- tree_old_indels %>%
  ggplot2::fortify()

plot_tree_old_indels <- tree_old_indels_df %>%
  ggtree(size = 0.4) +
  geom_treescale(x = 50, y = 2)

# "barplot"
aa_old_indels_df <- kappa_caseins_alignment_positions %>%
  filter(species %in% names(species_old_indels)) %>%
  arrange(msa_index) %>%
  mutate(is_gap = residue == "-") %>% # remove positions with gaps in **all** selected species
  group_by(msa_index) %>%
  mutate(all_gaps = all(is_gap)) %>%
  ungroup() %>%
  filter(!all_gaps, !is_gap) %>%
  mutate(new_index = group_indices(., msa_index)) %>%
  select(-residue, -all_gaps) %>% # order plot according to the new tree
  mutate_at("species", as.character) %>%
  left_join(tree_old_indels_df, by = c("species" = "label")) %>%
  mutate(species = fct_reorder(species, y)) %>%
  select(species, new_index)

aa_old_indels_df_max_length <- max(aa_old_indels_df$new_index)


plot_bars_old_indels <- aa_old_indels_df %>%
  ggplot(mapping = aes(x = new_index, y = species)) +
  geom_tile(colour = "darkgrey", fill = "black") +
  theme_bw() +
  theme(
    text = element_text(family = "Arial", colour = "black"),
    axis.ticks = element_line(size = 0.2, colour = "black"),
    axis.title.y = element_blank(),
    axis.line.y = element_blank(),
    axis.text.y = element_text(face = "italic", colour = "black"),
    axis.title.x = element_text(colour = "black"),
    axis.text.x = element_text(colour = "black"),
    plot.margin = margin(0, 0, 0, 0),
    panel.background = element_rect(fill = "white", colour = "white"),
    plot.background = element_rect(fill = "white", colour = "white"),
    legend.box.spacing = unit(0.01, "line"),
    legend.key.size = unit(5, "pt"),
    panel.border = element_blank(),
    strip.background = element_blank(),
    plot.subtitle = element_blank()
  ) +
  labs(x = "amino acid position in alignment") +
  scale_x_continuous(
    expand = c(0.02, 0),
    breaks = c(1, seq(50, 300, 50), aa_old_indels_df_max_length),
    minor_breaks = seq(0, 300, 25)
  ) +
  scale_y_discrete(position = "right", labels = underscore_to_space) +
  NULL


(plot_tree_old_indels <- plot_tree_old_indels +
  plot_bars_old_indels +
  plot_layout(widths = c(0.25, 1))
)

save_plot(
  plot = plot_tree_old_indels,
  name = "figure_S3"
)

Figure S4

(aacomp_scatter_plot <- kappa_caseins_parts_aa_composition %>%
  mutate(residues = fct_relevel(residues, list_residues_ordered_aa_comp)) %>%
  ggplot(mapping = aes(x = GMP, y = PKC)) +
  geom_abline(slope = 1, color = "darkgrey", size = 0.1) +
  geom_point(alpha = 0.3, size = 0.1) +
  facet_wrap(~residues, ncol = 5) +
  theme_bw() +
  theme(
    text = element_text(colour = "black"),
    strip.background = element_rect(fill = "white", colour = "black", size = 0),
    strip.text = element_text(size = 9, margin = margin(1, 1, 1, 1, unit = "pt")),
    panel.border = element_rect(size = 0.1),
    panel.spacing.x = unit(1, "lines"),
    axis.text = element_text(colour = "black"),
    axis.ticks = element_line(colour = "black", size = 0.1),
    panel.grid = element_blank(),
    panel.grid.major = element_line(
      size = 0.1,
      linetype = "dotted",
      colour = "black"
    ),
    panel.grid.minor = element_line(
      size = 0.05,
      linetype = "dotted",
      colour = "darkgrey"
    ),
  ) +
  scale_x_continuous(
    limits = c(0, 0.31),
    expand = c(0, 0),
    breaks = seq(0, 0.4, 0.1)
  ) +
  scale_y_continuous(
    limits = c(0, 0.31),
    expand = c(0, 0), breaks = seq(0, 0.4, 0.1)
  ) +
  coord_equal() +
  labs(
    x = "amino acid frequency (GMP)",
    y = "amino acid frequency (PKC)"
  ) +
  NULL
)

save_plot(
  plot = aacomp_scatter_plot,
  name = "figure_S4"
)

Figure S5

# phosphoryaltion predictions
plot_kappa_casein_pred_phospho_positions <- plot_kappa_caseins_parts +
  geom_segment(
    size = 0.1,
    data = kappa_casein_fam20c_matches_tidy %>%
      rename(seq_index = match_position),
    mapping = aes(
      x = seq_index,
      xend = seq_index,
      y = as.integer(species) - 0.5,
      yend = as.integer(species) + 0.5
    ),
    inherit.aes = FALSE
  ) +
  theme(
    legend.position = "none",
    axis.text.y = element_blank(),
    axis.ticks.y = element_blank()
  ) +
  labs(title = "Phosphorylations") +
  NULL

# O-glycosylation predictions
plot_kappa_casein_pred_oglyc_positions <- plot_kappa_caseins_parts +
  geom_segment(
    size = 0.1,
    data = kappa_casein_oglyc_predictions %>%
      filter(Oglyc_pred) %>%
      rename(seq_index = position),
    mapping = aes(
      x = seq_index,
      xend = seq_index,
      y = as.integer(species) - 0.5,
      yend = as.integer(species) + 0.5
    ),
    inherit.aes = FALSE
  ) +
  labs(title = "O-glycosylations") +
  NULL

plot_phospho_oglyco_positions <- plot_kappa_casein_tree +
  plot_kappa_casein_pred_phospho_positions +
  plot_kappa_casein_pred_oglyc_positions +
  plot_layout(widths = c(1, 4, 4)) &
  theme(plot.margin = margin(0, 0, 0, 0))

save_plot(
  plot = plot_phospho_oglyco_positions,
  name = "figure_S5"
)

Figure S6

cysteines_positions <- kappa_caseins_alignment_positions %>%
  filter(residue == "C") %>%
  select(-msa_index, -residue)

plot_kappa_casein_cysteines <- plot_kappa_caseins_parts +
  geom_segment(
    size = 0.1,
    data = cysteines_positions,
    mapping = aes(
      x = seq_index,
      xend = seq_index,
      y = as.integer(species) - 0.5,
      yend = as.integer(species) + 0.5
    ),
    inherit.aes = FALSE
  ) +
  labs(title = "Cysteines") +
  NULL

(cysteines_position_plot <- {
  plot_kappa_casein_tree +
    plot_kappa_casein_cysteines
} +
  plot_layout(width = c(1, 4)) &
  theme(plot.margin = margin(0, 0, 0, 0))
)

save_plot(
  plot = cysteines_position_plot,
  name = "figure_S6"
)

Table S1

# formating for html report
kappa_casein_gi %>%
  mutate_at("species", fct_relabel, underscore_to_space) %>%
  kable(format = "html") %>%
  kable_styling()

# formatting for latex and export
kappa_casein_gi %>%
  mutate_at("species", ~ glue("\\textit{<<.x>>}", .open = "<<", .close = ">>")) %>%
  mutate_at("species", ~ fct_recode(.x,
    "\\textit{Ictidomys_tridecemlineatus} \\textsuperscript{b}" = "\\textit{Ictidomys_tridecemlineatus}",
    "\\textit{Fukomys_damarensis} \\textsuperscript{c}" = "\\textit{Fukomys_damarensis}",
    "\\textit{Bos_mutus} \\textsuperscript{h}" = "\\textit{Bos_mutus}",
    "\\textit{Carlito_syrichta} \\textsuperscript{e}" = "\\textit{Carlito_syrichta}",
    "\\textit{Vicugna_pacos} \\textsuperscript{g}" = "\\textit{Vicugna_pacos}",
    "\\textit{Neomonachus_schauinslandi} \\textsuperscript{f}" = "\\textit{Neomonachus_schauinslandi}",
    "\\textit{Nannospalax_galili} \\textsuperscript{d}" = "\\textit{Nannospalax_galili}"
  )) %>%
  mutate_at("species", fct_relabel, underscore_to_space) %>%
  mutate_at("gi", ~ ifelse(is.na(.x), "\\textsuperscript{a}", .x)) %>%
  rename(
    `taxon id` = taxid,
    `GenInfo Identifier` = gi
  ) %>%
  knitr::kable(
    format = "latex",
    booktabs = TRUE,
    linesep = "",
    longtable = TRUE,
    caption.short = "Kappa-casein GenInfo Identifiers",
    label = "gi_species",
    caption = "\\textbf{Kappa-casein GenInfo Identifiers.}",
    escape = F
  ) %>%
  kable_styling(
    latex_options = c(
      "striped",
      "hold_position",
      "full_width",
      "condensed",
      "repeat_header"
    ),
    full_width = TRUE,
    repeat_header_continued = TRUE
  ) %>%
  group_rows("Monotremes", 1, 2) %>%
  group_rows("Marsupials", 3, 4) %>%
  group_rows("Placentals", 5, 99) %>%
  footnote(
    alphabet = c(
      "First exon was recovered from a BLAST with the elephant sequence", # a - Manatee
      "Was ``Spermophilus tridecemlineatus'' in @cite{fritz_2009}", # b - Ictidomys_tridecemlineatus
      "Was ``Cryptomys damarensis'' in @cite{fritz_2009}", # c - Fukomys_damarensis
      "Used instead of ``Spalax ehrenbergi'' in @cite{fritz_2009}", # d - Nannospalax galili
      "Was ``Tarsius syrichta'' in @cite{fritz_2009}''", # e - Carlito_syrichta
      "Was ``Monachus schauinslandi\" in @cite{fritz_2009}''", # f - Neomonachus schauinslandi
      "Was ``Vicugna vicugna'' in @cite{fritz_2009}", # g - Vicugna_pacos
      "Was ``Bos grunniens'' in @cite{fritz_2009}" # h - Bos mutus
    ),
    escape = FALSE
  ) %>%
  str_replace_all("@cite", "\\\\textcite") %>%
  save_table(table = ., name = "table_S1")

Table S2

# formating for html report
kappa.casein.manual.repeats %>%
  mutate_at("species", underscore_to_space) %>%
  kable(format = "html") %>%
  kable_styling()

format_species_ptr_table <- . %>%
  fct_relabel(underscore_to_space) %>%
  map_chr(~ glue("\\textit{<<.x>>}", .open = "<<", .close = ">>")) # italicized

format_sequence_ptr_table <- . %>%
  map_chr(~ str_remove_all(.x, "[ -]")) %>% # remove gaps
  map_chr(~ glue("\\texttt{<<.x>>}", .open = "<<", .close = ">>")) # monospaced

# formatting for latex and export
kappa.casein.manual.repeats %>%
  order_species_tree() %>%
  mutate_at("species", format_species_ptr_table) %>%
  mutate_at("sequence", format_sequence_ptr_table) %>%
  rename(N = N_flank_position, C = C_flank_position) %>%
  knitr::kable(
    format = "latex",
    booktabs = TRUE,
    linesep = "",
    longtable = TRUE,
    caption.short = "Protein tandem repeats found in kappa-casein sequences.",
    label = "supp_ptr",
    caption = "\\textbf{Protein tandem repeats found in kappa-casein sequences.} 
    Positions are given for the extremities of each tandem repeat unit 
    in the mature sequence.",
    escape = FALSE
  ) %>%
  add_header_above(c(" ", "position" = 2, " ")) %>%
  kable_styling(
    latex_options = c(
      "striped",
      "hold_position",
      "full_width",
      "condensed"
    ),
    full_width = TRUE,
    repeat_header_continued = TRUE
  ) %>%
  # footnote() %>%
  column_spec(1, width = "1.5in") %>%
  column_spec(2, width = "0.5in") %>%
  column_spec(3, width = "0.5in") %>%
  save_table(table = ., name = "table_S2")

Table S3

# formating for html report
all_predictions_metrics %>%
  mutate_if(is.numeric, round, digits = 2) %>%
  kable(format = "html") %>%
  kable_styling()

# formatting for latex and export
all_predictions_metrics %>%
  mutate_if(is.numeric, round, digits = 2) %>%
  mutate(method = fct_recode(method,
    "GlycoMine" = "glycomine",
    "O-GlcNAcPRED-II" = "O-GlcNAcPRED-II",
    "NetOClyc4.0" = "netoglyc",
    "GlycoPred" = "glycopred"
  )) %>%
  kable(
    format = "latex",
    longtable = TRUE,
    booktabs = TRUE,
    caption.short = "Prediction of O-glycosylation in kappa-casein",
    label = "supp_glyco_pred_methods",
    caption = "\\textbf{Prediction of O-glycosylation in kappa-casein 
    with GlycoMine \\autocite{li_2015a}; 
    GlycoPred \\autocite{hamby_2008}; 
    O-GlcNAcPRED-II \\autocite{jia_2018}; 
    and NetOGlyc4.0 \\autocite{steentoft_2013}.}",
    escape = F
  ) %>%
  kable_styling(latex_options = c("striped", "hold_position", "full_width")) %>%
  save_table(table = ., name = "table_S3")

Session info

• Date: 2019-02-12
• OS: Linux Mint 18.3
• Version: R version 3.4.4 (2018-03-15)
• Packages: acepack 1.4.1, ade4 1.7-13, ape 5.2, aphid 1.3.1, askpass 1.1, assertthat 0.2.0, backports 1.1.3, badger 0.0.4, base64enc 0.1-3, bindr 0.1.1, bindrcpp 0.2.2, BiocGenerics 0.24.0, Biostrings 2.46.0, broom 0.5.1, cellranger 1.1.0, checkmate 1.8.5, cleaver 1.21.4, cli 1.0.1, cluster 2.0.7-1, codetools 0.2-15, colorspace 1.4-0, crayon 1.3.4, data.table 1.12.0, digest 0.6.18, dlstats 0.1.0, dplyr 0.7.8, evaluate 0.12, farver 1.1.0, fastmatch 1.1-0, forcats 0.3.0, foreign 0.8-71, formatR 1.5, Formula 1.2-3, generics 0.0.2, geoscale 2.0, ggforce 0.1.3, ggplot2 3.1.0, ggpmisc 0.3.0, ggstance 0.3.1, ggthemes 4.0.1, ggtree 1.15.2, glue 1.3.0, gridExtra 2.3, gtable 0.2.0, haven 2.0.0, here 0.1, highr 0.7, Hmisc 4.1-1, hms 0.4.2, htmlTable 1.12, htmltools 0.3.6, htmlwidgets 1.3, httr 1.4.0, igraph 1.2.2, IRanges 2.12.0, jsonlite 1.6, kableExtra 0.9.0, kmer 1.1.0, knitr 1.21.7, labeling 0.3, lattice 0.20-38, latticeExtra 0.6-28, lazyeval 0.2.1, lubridate 1.7.4, magrittr 1.5, MASS 7.3-51.1, Matrix 1.2-14, modelr 0.1.2, munsell 0.5.0, nlme 3.1-137, nnet 7.3-12, openssl 1.2.1, patchwork 0.0.1, Peptides 2.4, phangorn 2.5.2, phylogram 2.1.0, pillar 1.3.1, pkgconfig 2.0.2, plyr 1.8.4, ProjectTemplate 0.8.2, purrr 0.2.5, quadprog 1.5-5, R6 2.3.0, RColorBrewer 1.1-2, Rcpp 1.0.0, readr 1.3.0, readxl 1.2.0, rlang 0.3.1, rmarkdown 1.11, rpart 4.1-13, rprojroot 1.3-2, rstudioapi 0.9.0, rvcheck 0.1.3, rvest 0.3.2, S4Vectors 0.16.0, scales 1.0.0, seqinr 3.4-5, sessioninfo 1.1.1, stringi 1.2.4, stringr 1.3.1, survival 2.43-3, tibble 2.0.1, tidyr 0.8.2, tidyselect 0.2.5, tidytree 0.2.1, tidyverse 1.2.1, treeio 1.7.1, tweenr 1.0.1, units 0.6-2, viridisLite 0.3.0, withr 2.1.2.9000, xfun 0.4, XML 3.99-0, xml2 1.2.0, XVector 0.18.0, yaml 2.2.0, zlibbioc 1.24.0